
北京時間5月11日,浙江萬里學院葛楚天團隊在 Science 雜志上發表了題為 The histone demethylase KDM6B regulates temperature-dependent sex determination in a turtle species (IF 37.205)研究論文,關于紅耳龜溫度依賴型性別決定研究領域取得突破性進展,解開了溫度依賴型性別決定研究長達半個世紀的謎團。
葛教授研究團隊一直使用聯科生物產品,對聯科(Multi Sciences)這一民族品牌給予了高度評價和信賴。此次突破性研究當中使用的聯科Maxi ECL溶液是一種新型配方的級辣根過氧化物酶(HRP)底物化學發光液,具有超高靈敏度、性能穩定、半衰期長、背景(本底)較低、重復性好等優點。它可用于固相膜(如 NC、PVDF)上結合的蛋白(Western Blot)或核酸(Southern/Northern Blot)的檢測,既可感光X光膠片,也適用于熒光CCD相機的熒光掃描。
聯科生物是擁有自主知識產權和核心**技術的研發生產型企業。十六年來專注于為科研工作者提供種類全面的細胞生物學、分子生物學產品和專業的檢測技術服務。聯科旗下擁有以“ELISA檢測試劑盒”、“流式抗體”、“Western檢測”、“分子生物學試劑”等為代表的超過400000種科研試劑產品,持有5項國家技術發明**,生產體系通過ISO9001國際質量體系認證,累計服務超過50000名全球滿意客戶,超過20000篇標注使用聯科產品的論文發表于包括Science、Nature等國際一流學術期刊。
葛楚天教授文章內容摘要:
The histone demethylase KDM6B regulates temperature-dependent sex determination in a turtle species
Chutian Ge,1*? Jian Ye,2* Ceri Weber,3 Wei Sun,1 Haiyan Zhang,1 Yingjie Zhou,1 Cheng Cai,1 Guoying Qian,1? Blanche Capel3?
Temperature-dependent sex determination is a notable model of phenotypic plasticity. In many reptiles, including the red-eared slider turtle Trachemys scripta elegans (T. scripta), the individual’s sex is determined by the ambient temperature during egg incubation. In this study, we show that the histone H3 lysine 27 (H3K27) demethylase KDM6B exhibits temperature dependent sexually dimorphic expression in early T. scripta embryos before the gonad is distinct. Knockdown of Kdm6b at 26°C (a temperature at which all offspring develop into males) triggers male-to-female sex reversal in >80% of surviving embryos. KDM6B directly promotes the transcription of the male sex-determining gene Dmrt1 by eliminating the trimethylation of H3K27 near its promoter. Additionally, overexpression of Dmrt1 is sufficient to rescue the sex reversal induced by disruption of Kdm6b.This study establishes causality and a direct genetic link between epigenetic mechanisms and temperature-dependent sex determination in a turtle species.

化學發光顯色試劑盒:
??高靈敏度的非放射性檢測系統:可檢測低至100fg~1pg的抗原,適用于痕量抗原的檢測。
??高分辨率:本底極低,即使長時間曝光,背景仍然極低,遠遠優于國產與進口同類產品
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??半衰期長:信號衰減慢,8個小時以上仍可感光X光膠片。
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| 廠商 | 存貨編碼 | 存貨名稱 | 規格型號 | 目錄價 |
| MultiSciences | 70-M1421 | Maxi ECL kit | 60mL | 1400 |
| MultiSciences | 70-M1423 | Maxi ECL kit | 500mL | 9500 |
| MultiSciences | 70-M1425 | Maxi ECL kit | 100mL | 2100 |
| MultiSciences | 70-M142B | Maxi ECL Bulk | 1000mL | 18000 |
| MultiSciences | 70-M142S | Maxi ECL sample | 10mL | 300 |
| MultiSciences | 70-P1421 | Potent ECL Kit | 60ml | 300 |
| MultiSciences | 70-P1423 | Potent ECL kit | 500ml | 2000 |
| MultiSciences | 70-P1425 | Potent ECL kit | 100ml | 480 |
| MultiSciences | 70-P142B | Potent ECL Bulk | 1L | 3600 |
| MultiSciences | 70-P142S | Potent ECL Sample | 10ml | 50 |
| MultiSciences | 70-U1421 | Ultra ECL kit | 60ml | 360 |
| MultiSciences | 70-U1423 | Ultra ECL kit | 500ml | 2400 |
| MultiSciences | 70-U1425 | Ultra ECL kit | 100ml | 560 |
| MultiSciences | 70-U142B | Ultra ECL Bulk | 1L | 4200 |
| MultiSciences | 70-U142S | Ultra ECL sample | 10ml | 60 |
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不同ECL試劑盒的選擇:
| 產品名稱 | Potent ECL | Ultra ECL | Maxi ECL |
| 貨號 | P142 | U142 | M142 |
| 最低檢測濃度 | 皮克級 | 幾百飛克至幾十皮克 | 飛克級 |
| 適合目的蛋白 | 表達豐度高的蛋白如內參 | 表達豐度較低的蛋白 | 表達豐度極低的蛋白 |
| 信號持續時間 | 0.5 - 2小時 | 2 - 5小時 | 8小時 |
