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身為一個熱愛美食、喜歡在城市裡挖掘驚喜的人,臺中公益路一直是我最常出沒的地方之一。這條路可說是「臺中人的美食戰場」,從精緻西餐到創意火鍋,從日式丼飯到義式早午餐,每走幾步,就會有完全不同的特色料理餐廳。 這次我特別花了一整個月,實際造訪了公益路上十間口碑不錯的餐廳。有的是網友熱推的打卡名店,也有隱藏在巷弄裡的小驚喜。我以環境氛圍、口味表現、價格CP值與再訪意願為基準,整理出這篇實測評比。希望能幫正在猶豫去哪裡吃飯的你,找到那一間「吃完會想再來」的餐廳。 評比標準與整理方向
這次我走訪的10家餐廳橫跨不同料理類型,從高質感牛排館到巷弄系早午餐,每一間都有自己獨特的風格。為了讓整體比較更客觀,我依照以下四大面向進行評比,並搭配實際用餐體驗來打分。
整體而言,我希望這份評比不只是「哪家好吃」,而是幫你在不同情境下(約會、家庭聚餐、朋友小聚、商業午餐)都能快速找到合適的選擇。畢竟,美食不只是味覺的滿足,更是一段段與朋友共享的生活記憶。 10間臺中公益路餐廳評比懶人包公益路向來是臺中人聚餐的首選地段,從火鍋、燒肉到中式料理與早午餐,每走幾步就有驚喜。以下是我實際造訪過的10間代表性餐廳清單,橫跨平價、創意、高級各路風格。
一頭牛日式燒肉|炭香濃郁的和牛饗宴,約會聚餐首選
走在公益路上,很難不被 一頭牛日式燒肉 的木質外觀吸引。低調卻不失質感的門面,搭配昏黃燈光與暖色調的內裝,讓人一進門就感受到濃濃的日式職人氛圍。店內空間不大,但桌距規劃得宜,每桌皆設有獨立排煙設備,烤肉時完全不怕滿身油煙味。 餐點特色
一頭牛的靈魂,絕對是他們招牌的「三國和牛拼盤」。 用餐體驗整體節奏掌握得非常好。店員會在你剛想烤下一片肉時貼心遞上夾子、幫忙換烤網,讓人完全不用分心。整場用餐過程就像一場表演,從視覺、嗅覺到味覺都被滿足。 綜合評分
地址:408臺中市南屯區公益路二段162號電話:04-23206800 小結語一頭牛日式燒肉不僅是「吃肉的地方」,更像是一場五感盛宴。從進門那一刻到最後一道甜點,都能感受到他們對細節的用心。 TANG Zhan 湯棧|文青系火鍋代表,麻香湯底與視覺美感並重
在公益路這條美食戰線上,TANG Zhan 湯棧 是讓人一眼就會想走進去的那一種。 餐點特色
湯棧最有名的當然是它的「麻香鍋」。 用餐體驗整體氛圍比一般火鍋店更有質感。 綜合評分
地址:408臺中市南屯區公益路二段248號電話:04-22580617 官網:https://www.facebook.com/TangZhan.tw/ 小結語TANG Zhan 湯棧 把傳統火鍋做出新的樣貌保留臺式鍋物的溫度,又結合現代風格與細節服務,讓吃鍋這件事變得更有品味。 如果你想找一間兼具「好吃、好拍、好放鬆」的火鍋店,湯棧會是公益路上最有風格的選擇之一。 NINI 尼尼臺中店|明亮寬敞的義式早午餐天堂
如果說前兩間是肉食愛好者的天堂,那 NINI 尼尼臺中店 絕對是想放鬆、聊聊天的好地方。餐廳外觀以白色系與大片玻璃窗為主,陽光灑進室內,讓人一踏入就有種度假般的輕盈感。假日早午餐時段特別熱鬧,建議提早訂位。 餐點特色
NINI 的菜單融合義式與臺灣人口味,選擇多樣且份量十足。主打的 松露燉飯 濃郁卻不膩口,米芯保留微Q口感;而 香蒜海鮮義大利麵 則以新鮮白蝦、花枝與淡菜搭配微辣蒜香,口感層次豐富。 用餐體驗店內氣氛輕鬆不拘謹,無論是一個人帶電腦工作、或朋友聚餐,都能找到舒服角落。餐點上桌速度穩定,服務人員態度親切、補水與收盤都非常主動。整體節奏讓人覺得「時間變慢了」,很適合想遠離忙碌日常的人。 綜合評分
地址:40861臺中市南屯區公益路二段18號電話:04-23288498 小結語NINI 尼尼臺中店是一間能讓人放下手機、慢慢吃飯的餐廳。餐點不追求浮誇,而是以「剛剛好」的份量與風味,陪伴每個平凡午後。如果你在找一間能邊吃邊聊天、拍照也漂亮的早午餐店,NINI 會是你在公益路上最不費力的幸福選擇。 加分100%浜中特選昆布鍋物|平價卻用心的湯頭系火鍋,家庭聚餐好選擇
在公益路這條高質感餐廳林立的戰場上,加分100%浜中特選昆布鍋物 走的是截然不同的路線。它沒有浮誇的裝潢、也沒有高價位的套餐,但靠著實在的湯頭與親切的服務,默默吸引許多回頭客。每到用餐時間,總能看到家庭或情侶三兩成群地圍著鍋邊聊天。 餐點特色
主打 北海道浜中昆布湯底,湯頭清澈卻不單薄,越煮越能喝出海藻與柴魚的自然香氣。 用餐體驗整體氛圍偏家庭取向,桌距寬敞、座位舒適,帶小孩來也不覺擁擠。店員態度親切,補湯、收盤都很勤快,給人一種「被照顧著」的安心感。 綜合評分
地址:403臺中市西區公益路288號電話:0910855180 小結語加分100%浜中特選昆布鍋物是一間「不浮誇、但會讓人想再訪」的火鍋店。它不追求豪華擺盤,而是用最簡單的湯頭與新鮮食材,傳遞出家常卻不平凡的溫度。 印月餐廳|中式料理的藝術演繹,宴客與家庭聚會首選
說到臺中公益路的中式料理代表,印月餐廳 絕對是榜上有名。這間開業多年的餐廳以「中菜西吃」的概念聞名,把傳統中式料理以現代手法重新詮釋。從建築外觀到餐具擺設,每個細節都散發著低調的典雅氣息。 餐點特色
印月最令人印象深刻的是他們將傳統中菜融入創意手法。 用餐體驗服務方面完全對得起餐廳的高級定位。從入座、點餐到上菜節奏,都拿捏得恰如其分。每道菜都會有服務人員細心介紹食材與吃法,讓人感受到「被款待」的尊榮感。 綜合評分
地址:408臺中市南屯區公益路二段818號電話:0422511155 小結語印月餐廳是一間「不只吃飯,更像品味生活」的地方。 KoDō 和牛燒肉|極致職人精神,專為儀式感與頂級味覺而生
若要形容 KoDō 和牛燒肉 的用餐體驗,一句話足以總結——「像在欣賞一場關於肉的表演」。 餐點特色
這裡主打 日本A5和牛冷藏肉,以「精切厚燒」的方式呈現。 用餐體驗KoDō 的最大特色是「儀式感」。 綜合評分
地址:403臺中市西區公益路260號電話:0423220312 官網:https://www.facebook.com/kodo2018/ 小結語KoDō 和牛燒肉不是日常餐廳,而是一場體驗。 永心鳳茶|在茶香裡用餐的優雅時光,臺味早午餐的新詮釋
走進 永心鳳茶公益店,彷彿進入一間有氣質的茶館。 餐點特色
永心鳳茶的餐點結合中式靈魂與西式擺盤,無論是「炸雞腿飯」還是「紅玉紅茶拿鐵」,都能讓人感受到熟悉卻不平凡的味道。 用餐體驗店內服務人員態度溫和,對茶品介紹詳盡。上餐節奏剛好,不急不徐。 綜合評分
地址:40360臺中市西區公益路68號三樓(勤美誠品)電話:0423221118 小結語永心鳳茶讓人重新定義「臺味」。 三希樓|老饕級江浙功夫菜,穩重又帶人情味的中式饗宴
位於公益路上的 三希樓 是許多臺中老饕的口袋名單。 餐點特色
三希樓的菜色以 江浙與港式料理 為主,兼顧傳統與現代風味。 用餐體驗三希樓的服務給人一種老派但貼心的感覺。 綜合評分
地址:408臺中市南屯區公益路二段95號電話:0423202322 官網:https://www.sanxilou.com.tw/ 小結語三希樓是一間「吃得出功夫」的餐廳。 一笈壽司|低調奢華的無菜單日料,職人手藝詮釋旬味極致
在熱鬧的公益路上,一笈壽司 低調得幾乎不顯眼。 餐點特色
一笈壽司採 Omakase(無菜單料理) 形式,每一餐都由主廚根據當日食材設計。 用餐體驗整場用餐約90分鐘,節奏緩慢但沉穩。 綜合評分
地址:408臺中市南屯區公益路二段25號電話:0423206368 官網:https://www.facebook.com/YIJI.sushi/ 小結語一笈壽司是一間真正讓人「放慢呼吸」的餐廳。 茶六燒肉堂|人氣爆棚的和牛燒肉聖地,肉香與幸福感同時滿分
若要票選公益路上「最難訂位」的餐廳,茶六燒肉堂 絕對名列前茅。 餐點特色
茶六主打 和牛燒肉套餐,價格約落在 $700–$1000 間,份量與品質兼具。 用餐體驗茶六的服務效率相當高。店員親切、換網勤快、補水速度快,整場用餐流程流暢無壓力。 綜合評分
地址:403臺中市西區公益路268號電話:0423281167 官網:https://inline.app/booking/-L93VSXuz8o86ahWDRg0:inline-live-karuizawa/-LUYUEIOYwa7GCUpAFWA 小結語茶六燒肉堂用「穩定品質+輕奢氛圍」抓住了臺中年輕族群的心。 吃完10家公益路餐廳後的心得與結語吃完這十家餐廳後,臺中公益路不只是一條美食街,而是一段生活風景線。 有的餐廳講究細膩與儀式感,像 一頭牛日式燒肉 與 一笈壽司,讓人感受到食材最純粹的美好 有的則以親切與溫度打動人心,像 加分昆布鍋物、永心鳳茶,讓人明白吃飯不只是為了飽足,而是一種被照顧的幸福。 而像茶六燒肉堂、TANG Zhan 湯棧 這類人氣名店,則用穩定的品質與熱絡的氛圍,成為許多臺中人心中「想吃肉就去那裡」的代名詞。 這十家店,構成了公益路最動人的縮影 有華麗的,也有溫柔的;有傳統的,也有創新的。 每一家都在自己的風格裡發光,讓人吃到的不只是料理,而是一種生活的溫度與節奏。 對我而言,這不僅是一場美食旅程,更是一趟關於「臺中味道」的回憶之旅。 FAQ:關於臺中公益路美食常見問題Q1:公益路哪一區的餐廳最集中? Q2:需要提前訂位嗎? 最後的話若要用一句話形容這趟美食之旅,我會說: TANG Zhan 湯棧適合請客嗎? 如果你也和我一樣喜歡用味蕾探索一座城市,那就把這篇公益路美食攻略收藏起來吧。一笈壽司慶生氛圍夠嗎? 無論是約會、慶生、家庭聚餐,或只是想犒賞一下辛苦的自己——這條路上永遠會有一間剛剛好的餐廳在等你。印月餐廳有雷嗎? 下一餐,不妨從這10家開始。茶六燒肉堂年節期間價格會變嗎? 打開手機、約上朋友,讓公益路成為你生活裡最容易抵達的小確幸。印月餐廳適合多人團聚嗎? 如果你有私心愛店,也歡迎留言分享,茶六燒肉堂春節期間適合來嗎? 你的推薦,可能讓我下一趟美食旅程變得更精彩。KoDō 和牛燒肉調味偏重嗎? A species of oval squid from Okinawa, locally known as Shiro-ika, is being cultured at OIST’s Marine Science Station. This animal exhibited amazing camouflaging abilities never before recorded in squid. Credit: Ryuta Nakajima / OIST Scientists have discovered that squid can camouflage to match their surroundings, challenging previous assumptions about cephalopod behavior. While octopus and cuttlefish are famous for their use of camouflage to match the color of the substrate, a third type of cephalopod—the squid—has never been reported displaying this ability. In a new study, scientists have shown that squid can and will camouflage by matching the color of a substrate to avoid predators. To determine this, the scientists performed a laboratory-based experiment to record the squid’s camouflaging abilities. When the squid were in a clean side of a tank, they were light in color, but when they were above algae, they promptly became darker. The researchers highlighted that as well as opening up exciting avenues for exploring the visual capabilities of the animal, the study shows that substrate is clearly useful for these squid to survive. Discovery of Squid Camouflage Ability While octopus and cuttlefish are famous for their use of camouflage to match the color of the substrate, a third type of cephalopod—the squid—has never been reported displaying this ability. Now, in a study published in Scientific Reports, scientists from the Physics and Biology Unit at the Okinawa Institute of Science and Technology Graduate University (OIST) have shown that squid can and will camouflage to match a substrate as a way of avoiding predators. This work opens up research avenues on how squid see and perceive the world around them. Furthermore, it sheds light on their behavior, and thus could go on to inform conservation initiatives. “Squid usually hover in the open ocean but we wanted to find out what happens when they move a bit closer to a coral reef or if they’re chased by a predator to the ocean floor,” explained one of the three first authors, Dr. Ryuta Nakajima, OIST visiting researcher. “If substrate is important for squid to avoid predation than that indicates that increases or decreases in squid populations are even more tied to the health of coral reef than we thought.” Previous studies on cephalopod camouflage have mostly been conducted on cuttlefish and octopus. Squid, as an animal that tends to live in the open ocean, are notoriously hard to keep in captivity and so have been rather avoided for this kind of research. But, since 2017, the scientists in the OIST’s Physics and Biology Unit have been culturing a species of oval squid in captivity. This squid, locally known as Shiro-ika, is one of three oval squids found in Okinawa. When in the open ocean, they are light in color, meaning that they blend into the ocean surface and flickering sunlight above. But the researchers suspected that when they moved closer to the ocean floor, it would be a different story entirely. Footage captured at OIST’s Marine Science Station shows that squid have an amazing ability to color-match the substrate in order to avoid predation. Credit: Ryuta Nakajima / OIST At OIST’s Marine Science Station, the oval squid were, almost accidentally, observed camouflaging to the substrate for the first time. The researchers were cleaning their tank to remove the algal growth. They noticed that the animals were changing color depending on whether they were over the cleaned surface or the algae. Following this observation, the researchers performed a controlled experiment. They kept several squid in a tank and cleaned half of the tank, leaving the other half covered in algae. They placed an underwater camera inside the water and suspended a regular camera above, so they could capture and run statistical tests on any color changes. The results were clear. When the squid were in the clean side of the tank, they were the light color. But when they were above the algae, they promptly became darker. The experiment uncovered an ability that had never previously been reported in squid. The researchers highlighted that as well as opening up exciting avenues for exploring the visual capabilities of the animal, the study also showed that substrate is clearly useful for these squid to survive. “This effect really is striking. I am still surprised that nobody has noticed this ability before us,” said another first author, Dr. Zdenek Lajbner. “It shows just how little we know about these wonderful animals.” Cultural and Economic Importance of Oval Squid in Okinawa Dr. Nakajima stated that this particular squid is important for Okinawa for economic and cultural reasons. “It was actually the local fishermen who were the first ones distinguishing three species of oval squids in Okinawa, long before the scientists,” said Dr. Nakajima. “We look forward to continuing to explore the camouflage capabilities of this species and cephalopods more generally,” said Prof. Jonathan Miller, Principal Investigator of OIST’s Physics and Biology Unit and the senior author of the research article. Reference: “Squid adjust their body color according to substrate” by Ryuta Nakajima, Zdeněk Lajbner, Michael J. Kuba, Tamar Gutnick, Teresa L. Iglesias, Keishu Asada, Takahiro Nishibayashi and Jonathan Miller, 28 March 2022, Scientific Reports. DOI: 10.1038/s41598-022-09209-6 Reconstruction of a Late Triassic ecosystem from Ghost Ranch, New Mexico. Published specimens and species preserved at Ghost Ranch were incorporated into the research team’s global ecological dataset. Credit: Viktor O. Leshyk/Natural History Museum of Los Angeles County Scientists have discovered that terrestrial ecosystems are more prone to collapse from significant animal life loss than marine ecosystems, with the impacts lasting longer on land. A new study published in Proceedings of the Royal Society B reveals that terrestrial ecosystems were more severely affected by the end-Triassic extinction than marine ecosystems. Furthermore, the recovery period for these terrestrial environments was longer compared to their marine counterparts, a finding that was unexpected. This discovery holds significant implications for the ongoing global extinction event, which is largely driven by human-induced climate change. “If you remove a significant component of critters from terrestrial ecosystems on land, those ecosystems fall apart and collapse much more easily than what happens in the oceans,” said Dr. Hank Woolley, co-author and NSF Postdoctoral Research Fellow at the Dinosaur Institute. “And secondly, it takes longer for terrestrial ecosystems to recover from a mass extinction event than marine ecosystems.” Collaborative Research Efforts and Methodology This project — which was undertaken by Woolley and many other paleoecologists and geologists from NHM and beyond — is the first documented scientific study taking an in-depth look at the end-Triassic extinction event’s effects on both terrestrial and marine ecosystems. In addition to Woolley, NHM Dinosaur Institute PhD students Paul Byrne and Kiersten Formoso (the latter now a newly-minted Presidential Postdoctoral Fellow at Rutgers University), and Postdoc Dr. Becky Wu, co-authored the study with their USC colleagues. “This research endeavor also combined the expertise of a diverse array of paleobiology, paleoecology, and geobiology researchers at the University of Southern California and the Natural History Museum,” said Dr. Kiersten Formoso. “It’s exciting to get such an assemblage of authors across disciplines to join together to tackle interesting questions about the past and natural world.” Skeleton of the early dinosaur Coelophysis bauri from the Late Triassic. The protracted restructuring of Early Jurassic terrestrial ecosystems coincided with the diversification of dinosaurs. Credit: Courtesy of Natural History Museum of Los Angeles County “The traditional marine ecospace framework is really effective and has been widely used in marine paleoecology. So while there are a lot of reconstructions of marine ecosystem change across mass extinctions, we have never been able to study terrestrial ecosystem change in the same way. We hope that this new terrestrial ecospace framework will open the door for future studies comparing how marine and terrestrial communities respond similarly or differently to rapid climate change events,” said co-author Dr. Alison Cribb, now 1851 Research Fellow at the University of Southampton. “As a research group that studies the paleobiology of life in the oceans and on land, with study systems ranging from billion-year-old stromatolites to dinosaurs, we thought that this would be a unique opportunity to bring our breadth of expertise together to tackle a fascinating and pressing topic—mass extinctions—in a new way,” said Woolley. While the earliest dinosaurs first appeared and spread more than 230 million years ago during the Triassic period, a catastrophic bout of CO2-fueled global warming led to the end-Triassic extinction event 201.5 million years ago, wiping out around 76% of all marine and terrestrial life. The effects of mass extinction events on marine environments have been well studied by creating ecospaces—3D representations that classify animals by how they feed and move and where they live—but the technique was never applied to terrestrial ecosystems. Until now, that is. Findings and Implications The new team of scientists compiled more than a thousand records from the Paleobiology Database to build the first terrestrial ecospace across the end-Triassic mass extinction. Next, they sorted each occurrence across the three axes to understand how well-represented different groups of animals were in terms of how they survived — eating insects while living mostly in the trees or scavenging for larger animals on the ground, for example. The researchers then took this new framework and compared it to a marine ecospace of the end-Triassic extinction. Graphic representation of the study concept and findings. Credit: C. Henrik Woolley/Natural History Museum of Los Angeles County “Our findings reveal that in the wake of the end-Triassic mass extinction, land and sea recovered differently, with land ecosystems experiencing higher extinction severity and taking more time than the oceans to recover groups that filled certain ecological roles. This was because land ecosystems had fewer groups occupying these roles, in contrast with that of the oceans where many taxonomic groups may be doing the same or similar things,” said Formoso. Their findings could have a stark warning for our modern terrestrial ecosystems as we struggle with growing extinctions in the wake of human-caused climate change. For one thing, the end-Triassic extinction event involved volcanoes spewing out CO2. One of the other takeaways from the results is that no mass extinction event will have the same effects across different ecosystems. Life on land is markedly different—flowering plants are just one group that didn’t exist during the Triassic—but knowing those ecosystems might be even more vulnerable than previously thought should raise alarm bells. Broader Impacts and Future Directions “Understanding how life responded to climate change in the past is a major aim of paleontology and one that provides us insight and tools for addressing our modern biodiversity crisis. However, this requires detailed knowledge across a diverse set of organisms, ecosystems, and environments. One of the unique aspects of our collaborative paleontology program at NHM and USC is that it combines an un-motley crew of paleontologists with expertise spanning species, systems, and time – all of which make big-picture studies like this paper possible. As a result, our paleontological impact is greater than the sum of its paleontologists!” says Dr. Nathan Smith, Curator of the Dinosaur Institute at NHM, and Woolley’s PhD and Postdoc supervisor. The new framework developed for the study could also help scientists better understand mass extinctions across history. That could include our ongoing crisis and possibly inform more effective mitigation and conservation efforts. The collaborative project also demonstrates the value fossils and the fossil record can have when it comes to understanding not just the world of the dinosaurs, but our own rapidly changing climate. “The Natural History Museums of Los Angeles County house millions of fossils spanning the entire history of life,” said Dr. Luis Chiappe, Senior Vice President of Research & Collections, and Gretchen Augustyn Director of the Dinosaur Institute. “Our collections are well-suited to address a wealth of questions related to past and present extinctions.” Reference: “Contrasting terrestrial and marine ecospace dynamics after the end-Triassic mass extinction event” by Alison T. Cribb, Kiersten K. Formoso, C. Henrik Woolley, James Beech, Shannon Brophy, Paul Byrne, Victoria C. Cassady, Amanda L. Godbold, Ekaterina Larina, Philip-peter Maxeiner, Yun-Hsin Wu, Frank A. Corsetti and David J. Bottjer, 6 December 2023, Proceedings of the Royal Society B. DOI: 10.1098/rspb.2023.2232 University of Texas at Dallas scientists discovered a unique “housekeeping” process in kidney cells where unwanted content is ejected, rejuvenating the cells. This mechanism, different from typical regeneration in other organs, could explain why kidneys stay healthy for a lifetime. A newly discovered kidney cell renewal process expels waste and organelles, offering potential breakthroughs in disease detection and nanomedicine. Scientists from the University of Texas at Dallas have identified a previously unknown “housekeeping” process in kidney cells that ejects unwanted content, resulting in cells that rejuvenate themselves and remain functioning and healthy. This unique self-renewal method, distinct from known regeneration processes in other body tissues, sheds light on how the kidneys can maintain their health throughout one’s life in the absence of injury or illness. The team detailed their findings in a study recently published in Nature Nanotechnology. Unlike the liver and skin, where cells divide to create new daughter cells and regenerate the organ, cells in the proximal tubules of the kidney are mitotically quiescent — they do not divide to create new cells. In cases of a mild injury or disease, kidney cells do have limited repair capabilities, and stem cells in the kidney can form new kidney cells, but only up to a point, said Dr. Jie Zheng, professor of chemistry and biochemistry in the School of Natural Sciences and Mathematics and co-corresponding author of the study. “In most scenarios, if kidney cells are severely injured, they will die, and they cannot regenerate,” said Zheng, a Distinguished Chair in Natural Sciences and Mathematics. “Your kidney will just fail sooner or later. That’s a big challenge in health management for kidney disease. All we can do currently is slow down the progression to kidney failure. We cannot easily repair the organ if it’s injured severely or by chronic disease. “That’s why discovering this self-renewal mechanism is probably one of the most significant findings we’ve made so far. With excellent core facilities and dedicated staff, UTD is a great place to do such cutting-edge research.” Further research may lead to improvements in nanomedicine and early detection of kidney disease, he said. An Unexpected Finding The researchers said their discovery took them by surprise. For 15 years, Zheng has been investigating the biomedical use of gold nanoparticles as imaging agents, for fundamental understanding of glomerular filtration, for early detection of liver disease, and for targeted delivery of cancer drugs. Part of that work has focused on understanding how gold nanoparticles are filtered by the kidneys and cleared from the body through urine. Research has shown that gold nanoparticles generally pass unscathed through a structure in the kidney called the glomerulus and then travel into proximal tubules, which make up over 50% of the kidney. Proximal tubular epithelial cells have been shown to internalize the nanoparticles, which eventually escape those cells to be excreted in urine. But just how they escape the cells has been unclear. In December 2021, Zheng and his chemistry team — research scientist and lead study author Yingyu Huang PhD’20 and co-corresponding author Dr. Mengxiao Yu, research associate professor — were examining gold nanoparticles in proximal tubular tissue samples using an optical microscope, but they switched to one of the University’s electron microscopes (EM) for better resolution. From left: University of Texas at Dallas researchers Dr. Jie Zheng, Yingyu Huang PhD’20, and Dr. Mengxiao Yu recently published a study in Nature Nanotechnology describing a previously unknown self-renewal process in kidney cells. Credit:University of Texas at Dallas “Using the EM, we saw gold nanoparticles encapsulated in lysosomes inside of large vesicles in the lumen, which is the space outside the epithelial cells,” Yu said. Vesicles are small fluid-filled sacks found both inside and outside of cells that transport various substances. “But we also observed the formation of these vesicles containing both nanoparticles and organelles outside of cells, and it was not something we had seen before,” Yu said. The researchers found proximal tubular cells that had formed outwardly facing bulges in their luminal membranes that contained not only gold nanoparticles but also lysosomes, mitochondria, endoplasmic reticulum, and other organelles typically confined to a cell’s interior. The extruded contents were then pinched off into a vesicle that floated off into the extracellular space. “At that moment, we knew this was an unusual phenomenon,” Yu said. “This is a new method for cells to remove cellular contents.” A New Renewal Process The extrusion-mediated self-renewal mechanism is fundamentally different from other known regenerative processes — such as cell division — and housecleaning tasks like exocytosis. In exocytosis, foreign substances such as nanoparticles are encapsulated in a vesicle inside the cell. Then, the vesicle membrane fuses with the inside of the cell’s membrane, which opens to release the contents to the outside. “What we discovered is totally different from the previous understanding of how cells eliminate particles. There is no membrane fusion in the extrusion process, which eliminates old content from normal cells and allows the cells to update themselves with fresh contents,” Huang said. “It happens whether foreign nanoparticles are present or not. It’s an intrinsic, proactive process these cells use to survive longer and function properly.” Zheng said their findings open up new areas of study. For example, epithelial cells, like those in the proximal tubules, are found in other tissues, such as the walls of arteries and in the gut and digestive tract. “In the field of nanomedicine, we want to minimize the accumulation of nanoparticles in the body as much as possible. We don’t want them to get stuck in the kidneys, so it’s very important to understand how nanoparticles are eliminated from the proximal tubules,” Zheng said. “Also, if we could learn how to regulate or monitor this self-renewal process, we might find a way to keep kidneys healthy in patients with high blood pressure or diabetes. “If we could develop ways to detect the signature of this process noninvasively, perhaps it could be an indicator of early kidney disease.” Reference: “Proximal tubules eliminate endocytosed gold nanoparticles through an organelle-extrusion-mediated self-renewal mechanism” by Yingyu Huang, Mengxiao Yu and Jie Zheng, 17 April 2023, Nature Nanotechnology. DOI: 10.1038/s41565-023-01366-7 The studywas funded by the National Institute of Diabetes and Digestive and Kidney Diseases, the National Science Foundation, and the Cancer Prevention and Research Institute of Texas. RRG455KLJIEVEWWF |
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