"mainly by promoting" is a correct and usable phrase in written English.
It is often used to indicate the primary method or action by which something is achieved or accomplished. Example: "The company's success was achieved mainly by promoting their products through social media campaigns."
Similar to its function in cNK cells, ETS1 regulates the fitness of ILC2s and the common ILC progenitors mainly by promoting optimal expression of Id2.
GS2/GL2/GLW2 encodes a transcription factor Growth-Regulating Factor 4 (OsGRF4), which regulates grain length and width mainly by promoting cell expansion (Che et al. 2015; Duan et al. 2015; Hu et al. 2015; Li et al. 2016).
RPS10B promotes shoot branching mainly by promoting axillary shoot development.
Recently, though SUMO has been suggested to have a transcriptionally repressive role, mainly by promoting non-covalent interactions with co-repressors.
Although the exact mechanisms remain to be extensively investigated, COX-2 is thought to contribute to carcinogenesis mainly by promoting cell proliferation and antagonizing cell apoptosis (Krysan et al. 2005; Tsujii and DuBois 1995; Wang et al. 2005).
The E7 oncoprotein of the "high risk" human papillomaviruses (HPVs) is a tumor-specific antigen that plays a crucial role in virus-associated tumorigenesis, mainly by promoting cellular proliferation [ 5, 6].
It has been reported that GA-mediated plant growth is mainly achieved by promoting cell elongation in plants.
In Arabidopsis, the root volume is increased by enhancing the growth of lateral roots, whereas for maize, this volume increase mainly occurs by promoting the elongation of axial roots in a low-phosphate environment.
More than a half-dozen current and former executives, however, said the Homeownership Alliance was set up mainly to defend Fannie Mae and Freddie Mac by promoting their role in the housing market, and the two companies paid almost the entire cost of the group's operations.
Current anti-diabetes drugs are mainly aimed to correct hyperglycemia by promoting pancreatic β-cell insulin secretion, increasing insulin sensitivity, or reducing intestinal glucose uptake and hepatic gluconeogenesis.
IL-17A mainly mediates its immune regulatory function by promoting the generation of pro-inflammatory cytokines and chemokines, which leads to the attraction of neutrophils and macrophages to the inflammation site.
