Phillip Karpowicz

3.1k total citations · 1 hit paper
29 papers, 1.9k citations indexed

About

Phillip Karpowicz is a scholar working on Molecular Biology, Endocrine and Autonomic Systems and Physiology. According to data from OpenAlex, Phillip Karpowicz has authored 29 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Molecular Biology, 11 papers in Endocrine and Autonomic Systems and 11 papers in Physiology. Recurrent topics in Phillip Karpowicz's work include Circadian rhythm and melatonin (11 papers), Spaceflight effects on biology (6 papers) and Pluripotent Stem Cells Research (5 papers). Phillip Karpowicz is often cited by papers focused on Circadian rhythm and melatonin (11 papers), Spaceflight effects on biology (6 papers) and Pluripotent Stem Cells Research (5 papers). Phillip Karpowicz collaborates with scholars based in Canada, United States and Austria. Phillip Karpowicz's co-authors include Norbert Perrimon, Derek van der Kooy, Jessica Pérez, Cindi M. Morshead, Jian-Quan Ni, B. Czech, Rong Tao, Matthew A. Booker, Gregory J. Hannon and Julius Brennecke and has published in prestigious journals such as Nature Medicine, Nature Communications and Journal of Neuroscience.

In The Last Decade

Phillip Karpowicz

27 papers receiving 1.9k citations

Hit Papers

A genome-scale shRNA resource for transgenic RNAi in Dros... 2011 2026 2016 2021 2011 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. A genome-scale shRNA resource for transgenic RNAi in Drosophila
    2011 605 citations Jian-Quan Ni, Rui Zhou et al. Nature Methods profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Phillip Karpowicz Canada 17 1.1k 384 345 277 269 29 1.9k
Sarah B. Pierce United States 25 2.8k 2.6× 318 0.8× 455 1.3× 268 1.0× 218 0.8× 32 4.0k
Konrad Noben‐Trauth United States 25 1.7k 1.6× 297 0.8× 338 1.0× 218 0.8× 219 0.8× 47 3.4k
Emerald Perlas Italy 27 1.4k 1.3× 401 1.0× 445 1.3× 125 0.5× 273 1.0× 39 2.8k
Ashley E. Webb United States 24 2.6k 2.4× 343 0.9× 330 1.0× 88 0.3× 503 1.9× 38 3.7k
G. Giacomo Consalez Italy 35 2.0k 1.9× 723 1.9× 371 1.1× 104 0.4× 155 0.6× 93 3.3k
Reiko Toyama United States 28 2.6k 2.5× 424 1.1× 689 2.0× 302 1.1× 123 0.5× 39 3.3k
Gonzalo Álvarez‐Bolado Germany 29 2.2k 2.1× 759 2.0× 337 1.0× 206 0.7× 122 0.5× 69 3.2k
Robert J. McEvilly United States 22 2.0k 1.9× 516 1.3× 243 0.7× 240 0.9× 215 0.8× 24 3.3k
Yoshinobu Hara Japan 29 1.1k 1.1× 1.0k 2.7× 398 1.2× 225 0.8× 148 0.6× 70 2.2k
Katrin Anlag Germany 9 2.1k 2.0× 455 1.2× 246 0.7× 184 0.7× 221 0.8× 9 3.7k

Countries citing papers authored by Phillip Karpowicz

Since Specialization
Citations

This map shows the geographic impact of Phillip Karpowicz's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Phillip Karpowicz with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Phillip Karpowicz more than expected).

Fields of papers citing papers by Phillip Karpowicz

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Phillip Karpowicz. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Phillip Karpowicz. The network helps show where Phillip Karpowicz may publish in the future.

Co-authorship network of co-authors of Phillip Karpowicz

This figure shows the co-authorship network connecting the top 25 collaborators of Phillip Karpowicz. A scholar is included among the top collaborators of Phillip Karpowicz based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Phillip Karpowicz. Phillip Karpowicz is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Karpowicz, Phillip, et al.. (2026). Development of multi-species qPCR assays for a nanofluidic transcriptional profiling chip to assess responses of salmonids to changing environments. Canadian Journal of Fisheries and Aquatic Sciences. 83. 1–12.
2.
Patel, Arun Bhai, et al.. (2025). Integration of photoperiod and time-restricted feeding on the circadian gene rhythms in juvenile salmon. Scientific Reports. 15(1). 16156–16156.
3.
Shin, Min‐Jeong, et al.. (2024). The emergence of circadian timekeeping in the intestine. Nature Communications. 15(1). 1788–1788. 2 indexed citations
4.
Collins, Stephen M., et al.. (2023). A30 EPITHELIAL FUNCTION OF THE CIRCADIAN CLOCK GENE, BMAL1, IS NECESSARY FOR COLONIC REGENERATION. Journal of the Canadian Association of Gastroenterology. 6(Supplement_1). 16–16. 1 indexed citations
5.
Wang, Huaqing, et al.. (2022). BMAL1 Regulates the Daily Timing of Colitis. Frontiers in Cellular and Infection Microbiology. 12. 773413–773413. 18 indexed citations
6.
Karpowicz, Phillip, et al.. (2022). Fluorescent Reporters for Studying Circadian Rhythms in Drosophila melanogaster. Methods in molecular biology. 2482. 353–371. 2 indexed citations
7.
Wu, Gang, Abedalrhman Alkhateeb, Suhrid Banskota, et al.. (2021). The Circadian Clock Gene, Bmal1, Regulates Intestinal Stem Cell Signaling and Represses Tumor Initiation. Cellular and Molecular Gastroenterology and Hepatology. 12(5). 1847–1872.e0. 58 indexed citations
8.
Heath, Daniel D., et al.. (2019). Testing the expression of circadian clock genes in the tissues of Chinook salmon, Oncorhynchus tshawytscha. Chronobiology International. 36(8). 1088–1102. 3 indexed citations
9.
He, Li, et al.. (2018). Intestinal Stem Cells Exhibit Conditional Circadian Clock Function. Stem Cell Reports. 11(5). 1287–1301. 35 indexed citations
10.
Weaver, David R., et al.. (2017). The Circadian Clock Gene BMAL1 Coordinates Intestinal Regeneration. Cellular and Molecular Gastroenterology and Hepatology. 4(1). 95–114. 72 indexed citations
11.
Karpowicz, Phillip, Yong Zhang, John B. Hogenesch, Patrick Emery, & Norbert Perrimon. (2013). The Circadian Clock Gates the Intestinal Stem Cell Regenerative State. Cell Reports. 3(4). 996–1004. 100 indexed citations
12.
DeVeale, Brian, Damaris Bausch‐Fluck, Raewyn M. Seaberg, et al.. (2013). Surfaceome Profiling Reveals Regulators of Neural Stem Cell Function. Stem Cells. 32(1). 258–268. 22 indexed citations
13.
Smukler, Simon R., Rozita Razavi, George Bikopoulos, et al.. (2011). The Adult Mouse and Human Pancreas Contain Rare Multipotent Stem Cells that Express Insulin. Cell stem cell. 8(3). 281–293. 168 indexed citations
14.
Ni, Jian-Quan, Rui Zhou, B. Czech, et al.. (2011). A genome-scale shRNA resource for transgenic RNAi in Drosophila. Nature Methods. 8(5). 405–407. 605 indexed citations breakdown →
15.
Karpowicz, Phillip, Jessica Pérez, & Norbert Perrimon. (2010). The Hippo tumor suppressor pathway regulates intestinal stem cell regeneration. Journal of Cell Science. 123(24). e1–e1. 6 indexed citations
16.
Karpowicz, Phillip, et al.. (2009). E-Cadherin Regulates Neural Stem Cell Self-Renewal. Journal of Neuroscience. 29(12). 3885–3896. 93 indexed citations
17.
Karpowicz, Phillip, Tomoyuki Inoue, Brian DeVeale, et al.. (2007). Adhesion Is Prerequisite, But Alone Insufficient, to Elicit Stem Cell Pluripotency. Journal of Neuroscience. 27(20). 5437–5447. 12 indexed citations
18.
Karpowicz, Phillip, Cindi M. Morshead, Eric Jervis, et al.. (2005). Support for the immortal strand hypothesis: neural stem cells partition DNA asymmetrically in vitro. The Journal of Cell Biology. 170(5). 721–732. 146 indexed citations
19.
Karpowicz, Phillip, et al.. (2005). Developing Human-Nonhuman Chimeras in Human Stem Cell Research: Ethical Issues and Boundaries. Kennedy Institute of Ethics journal. 15(2). 107–134. 55 indexed citations
20.
Karpowicz, Phillip, C. M. S. Cohen, & Derek van der Kooy. (2004). It is ethical to transplant human stem cells into nonhuman embryos. Nature Medicine. 10(4). 331–335. 56 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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